Stealth Turbo Wastegate Heatshield (38-42mm Housings) by Heatshield Products
Wastegate Heat Shields from Heatshield Products reduce potential turbo lag while also protecting other engine components from heat damage and help to reduce underhood temperatures. Wastegate Heat Shields from Heatshield Products are custom-fit based on the wastegate size and use extreme-temperature materials to keep the heat on the hot side of the turbo where it belongs. Installation is a breeze since you don't have to trim or fit the heat shield blanket to fit your turbo housings. Heatshield Products Stealth turbo heat shields' silica contact layer and silica insulation make the turbo shields capable of withstanding 1800 degrees F continuously.
The part number for this item is Heatshield Products 300874 and it fits 42-46mm wastegate housings.